1673980477 has 4 divisors (see below), whose sum is σ = 1802748220. Its totient is φ = 1545212736.

The previous prime is 1673980453. The next prime is 1673980499. The reversal of 1673980477 is 7740893761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81252196 + 1592728281 = 9014^2 + 39909^2 .

It is a cyclic number.

It is not a de Polignac number, because 1673980477 - 2²³ = 1665591869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673980417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64383852 + ... + 64383877.

It is an arithmetic number, because the mean of its divisors is an integer number (450687055).

Almost surely, 2^1673980477 is an apocalyptic number.

It is an amenable number.

1673980477 is a deficient number, since it is larger than the sum of its proper divisors (128767743).

1673980477 is a wasteful number, since it uses less digits than its factorization.

1673980477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128767742.

The product of its (nonzero) digits is 1778112, while the sum is 52.

The square root of 1673980477 is about 40914.3065076264. The cubic root of 1673980477 is about 1187.3628670010.

The spelling of 1673980477 in words is "one billion, six hundred seventy-three million, nine hundred eighty thousand, four hundred seventy-seven".